drivers/net/ethernet/aquantia/atlantic/aq_nic.c

   1 /*
   2  * aQuantia Corporation Network Driver
   3  * Copyright (C) 2014-2017 aQuantia Corporation. All rights reserved
   4  *
   5  * This program is free software; you can redistribute it and/or modify it
   6  * under the terms and conditions of the GNU General Public License,
   7  * version 2, as published by the Free Software Foundation.
   8  */
   9
  10 /* File aq_nic.c: Definition of common code for NIC. */
  11
  12 #include "aq_nic.h"
  13 #include "aq_ring.h"
  14 #include "aq_vec.h"
  15 #include "aq_hw.h"
  16 #include "aq_pci_func.h"
  17
  18 #include <linux/moduleparam.h>
  19 #include <linux/netdevice.h>
  20 #include <linux/etherdevice.h>
  21 #include <linux/timer.h>
  22 #include <linux/cpu.h>
  23 #include <linux/ip.h>
  24 #include <linux/tcp.h>
  25 #include <net/ip.h>
  26
  27 static unsigned int aq_itr = AQ_CFG_INTERRUPT_MODERATION_AUTO;
  28 module_param_named(aq_itr, aq_itr, uint, 0644);
  29 MODULE_PARM_DESC(aq_itr, "Interrupt throttling mode");
  30
  31 static unsigned int aq_itr_tx;
  32 module_param_named(aq_itr_tx, aq_itr_tx, uint, 0644);
  33 MODULE_PARM_DESC(aq_itr_tx, "TX interrupt throttle rate");
  34
  35 static unsigned int aq_itr_rx;
  36 module_param_named(aq_itr_rx, aq_itr_rx, uint, 0644);
  37 MODULE_PARM_DESC(aq_itr_rx, "RX interrupt throttle rate");
  38
  39 static void aq_nic_update_ndev_stats(struct aq_nic_s *self);
  40
  41 static void aq_nic_rss_init(struct aq_nic_s *self, unsigned int num_rss_queues)
  42 {
  43         struct aq_nic_cfg_s *cfg = &self->aq_nic_cfg;
  44         struct aq_rss_parameters *rss_params = &cfg->aq_rss;
  45         int i = 0;
  46
  47         static u8 rss_key[40] = {
  48                 0x1e, 0xad, 0x71, 0x87, 0x65, 0xfc, 0x26, 0x7d,
  49                 0x0d, 0x45, 0x67, 0x74, 0xcd, 0x06, 0x1a, 0x18,
  50                 0xb6, 0xc1, 0xf0, 0xc7, 0xbb, 0x18, 0xbe, 0xf8,
  51                 0x19, 0x13, 0x4b, 0xa9, 0xd0, 0x3e, 0xfe, 0x70,
  52                 0x25, 0x03, 0xab, 0x50, 0x6a, 0x8b, 0x82, 0x0c
  53         };
  54
  55         rss_params->hash_secret_key_size = sizeof(rss_key);
  56         memcpy(rss_params->hash_secret_key, rss_key, sizeof(rss_key));
  57         rss_params->indirection_table_size = AQ_CFG_RSS_INDIRECTION_TABLE_MAX;
  58
  59         for (i = rss_params->indirection_table_size; i--;)
  60                 rss_params->indirection_table[i] = i & (num_rss_queues - 1);
  61 }
  62
  63 /* Checks hw_caps and 'corrects' aq_nic_cfg in runtime */
  64 void aq_nic_cfg_start(struct aq_nic_s *self)
  65 {
  66         struct aq_nic_cfg_s *cfg = &self->aq_nic_cfg;
  67
  68         cfg->tcs = AQ_CFG_TCS_DEF;
  69
  70         cfg->is_polling = AQ_CFG_IS_POLLING_DEF;
  71
  72         cfg->itr = aq_itr;
  73         cfg->tx_itr = aq_itr_tx;
  74         cfg->rx_itr = aq_itr_rx;
  75
  76         cfg->is_rss = AQ_CFG_IS_RSS_DEF;
  77         cfg->num_rss_queues = AQ_CFG_NUM_RSS_QUEUES_DEF;
  78         cfg->aq_rss.base_cpu_number = AQ_CFG_RSS_BASE_CPU_NUM_DEF;
  79         cfg->flow_control = AQ_CFG_FC_MODE;
  80
  81         cfg->mtu = AQ_CFG_MTU_DEF;
  82         cfg->link_speed_msk = AQ_CFG_SPEED_MSK;
  83         cfg->is_autoneg = AQ_CFG_IS_AUTONEG_DEF;
  84
  85         cfg->is_lro = AQ_CFG_IS_LRO_DEF;
  86
  87         cfg->vlan_id = 0U;
  88
  89         aq_nic_rss_init(self, cfg->num_rss_queues);
  90
  91         /*descriptors */
  92         cfg->rxds = min(cfg->aq_hw_caps->rxds_max, AQ_CFG_RXDS_DEF);
  93         cfg->txds = min(cfg->aq_hw_caps->txds_max, AQ_CFG_TXDS_DEF);
  94
  95         /*rss rings */
  96         cfg->vecs = min(cfg->aq_hw_caps->vecs, AQ_CFG_VECS_DEF);
  97         cfg->vecs = min(cfg->vecs, num_online_cpus());
  98         cfg->vecs = min(cfg->vecs, self->irqvecs);
  99         /* cfg->vecs should be power of 2 for RSS */
 100         if (cfg->vecs >= 8U)
 101                 cfg->vecs = 8U;
 102         else if (cfg->vecs >= 4U)
 103                 cfg->vecs = 4U;
 104         else if (cfg->vecs >= 2U)
 105                 cfg->vecs = 2U;
 106         else
 107                 cfg->vecs = 1U;
 108
 109         cfg->num_rss_queues = min(cfg->vecs, AQ_CFG_NUM_RSS_QUEUES_DEF);
 110
 111         cfg->irq_type = aq_pci_func_get_irq_type(self);
 112
 113         if ((cfg->irq_type == AQ_HW_IRQ_LEGACY) ||
 114             (cfg->aq_hw_caps->vecs == 1U) ||
 115             (cfg->vecs == 1U)) {
 116                 cfg->is_rss = 0U;
 117                 cfg->vecs = 1U;
 118         }
 119
 120         cfg->link_speed_msk &= cfg->aq_hw_caps->link_speed_msk;
 121         cfg->features = cfg->aq_hw_caps->hw_features;
 122 }
 123
 124 static int aq_nic_update_link_status(struct aq_nic_s *self)
 125 {
 126         int err = self->aq_fw_ops->update_link_status(self->aq_hw);
 127         u32 fc = 0;
 128
 129         if (err)
 130                 return err;
 131
 132         if (self->link_status.mbps != self->aq_hw->aq_link_status.mbps) {
 133                 pr_info("%s: link change old %d new %d\n",
 134                         AQ_CFG_DRV_NAME, self->link_status.mbps,
 135                         self->aq_hw->aq_link_status.mbps);
 136                 aq_nic_update_interrupt_moderation_settings(self);
 137
 138                 /* Driver has to update flow control settings on RX block
 139                  * on any link event.
 140                  * We should query FW whether it negotiated FC.
 141                  */
 142                 if (self->aq_fw_ops->get_flow_control)
 143                         self->aq_fw_ops->get_flow_control(self->aq_hw, &fc);
 144                 if (self->aq_hw_ops->hw_set_fc)
 145                         self->aq_hw_ops->hw_set_fc(self->aq_hw, fc, 0);
 146         }
 147
 148         self->link_status = self->aq_hw->aq_link_status;
 149         if (!netif_carrier_ok(self->ndev) && self->link_status.mbps) {
 150                 aq_utils_obj_set(&self->flags,
 151                                  AQ_NIC_FLAG_STARTED);
 152                 aq_utils_obj_clear(&self->flags,
 153                                    AQ_NIC_LINK_DOWN);
 154                 netif_carrier_on(self->ndev);
 155                 netif_tx_wake_all_queues(self->ndev);
 156         }
 157         if (netif_carrier_ok(self->ndev) && !self->link_status.mbps) {
 158                 netif_carrier_off(self->ndev);
 159                 netif_tx_disable(self->ndev);
 160                 aq_utils_obj_set(&self->flags, AQ_NIC_LINK_DOWN);
 161         }
 162         return 0;
 163 }
 164
 165 static void aq_nic_service_timer_cb(struct timer_list *t)
 166 {
 167         struct aq_nic_s *self = from_timer(self, t, service_timer);
 168         int ctimer = AQ_CFG_SERVICE_TIMER_INTERVAL;
 169         int err = 0;
 170
 171         if (aq_utils_obj_test(&self->flags, AQ_NIC_FLAGS_IS_NOT_READY))
 172                 goto err_exit;
 173
 174         err = aq_nic_update_link_status(self);
 175         if (err)
 176                 goto err_exit;
 177
 178         if (self->aq_fw_ops->update_stats)
 179                 self->aq_fw_ops->update_stats(self->aq_hw);
 180
 181         aq_nic_update_ndev_stats(self);
 182
 183         /* If no link - use faster timer rate to detect link up asap */
 184         if (!netif_carrier_ok(self->ndev))
 185                 ctimer = max(ctimer / 2, 1);
 186
 187 err_exit:
 188         mod_timer(&self->service_timer, jiffies + ctimer);
 189 }
 190
 191 static void aq_nic_polling_timer_cb(struct timer_list *t)
 192 {
 193         struct aq_nic_s *self = from_timer(self, t, polling_timer);
 194         struct aq_vec_s *aq_vec = NULL;
 195         unsigned int i = 0U;
 196
 197         for (i = 0U, aq_vec = self->aq_vec[0];
 198                 self->aq_vecs > i; ++i, aq_vec = self->aq_vec[i])
 199                 aq_vec_isr(i, (void *)aq_vec);
 200
 201         mod_timer(&self->polling_timer, jiffies +
 202                   AQ_CFG_POLLING_TIMER_INTERVAL);
 203 }
 204
 205 int aq_nic_ndev_register(struct aq_nic_s *self)
 206 {
 207         int err = 0;
 208
 209         if (!self->ndev) {
 210                 err = -EINVAL;
 211                 goto err_exit;
 212         }
 213
 214         err = hw_atl_utils_initfw(self->aq_hw, &self->aq_fw_ops);
 215         if (err)
 216                 goto err_exit;
 217
 218         err = self->aq_fw_ops->get_mac_permanent(self->aq_hw,
 219                             self->ndev->dev_addr);
 220         if (err)
 221                 goto err_exit;
 222
 223 #if defined(AQ_CFG_MAC_ADDR_PERMANENT)
 224         {
 225                 static u8 mac_addr_permanent[] = AQ_CFG_MAC_ADDR_PERMANENT;
 226
 227                 ether_addr_copy(self->ndev->dev_addr, mac_addr_permanent);
 228         }
 229 #endif
 230
 231         for (self->aq_vecs = 0; self->aq_vecs < aq_nic_get_cfg(self)->vecs;
 232              self->aq_vecs++) {
 233                 self->aq_vec[self->aq_vecs] =
 234                     aq_vec_alloc(self, self->aq_vecs, aq_nic_get_cfg(self));
 235                 if (!self->aq_vec[self->aq_vecs]) {
 236                         err = -ENOMEM;
 237                         goto err_exit;
 238                 }
 239         }
 240
 241         netif_carrier_off(self->ndev);
 242
 243         netif_tx_disable(self->ndev);
 244
 245         err = register_netdev(self->ndev);
 246         if (err)
 247                 goto err_exit;
 248
 249 err_exit:
 250         return err;
 251 }
 252
 253 void aq_nic_ndev_init(struct aq_nic_s *self)
 254 {
 255         const struct aq_hw_caps_s *aq_hw_caps = self->aq_nic_cfg.aq_hw_caps;
 256         struct aq_nic_cfg_s *aq_nic_cfg = &self->aq_nic_cfg;
 257
 258         self->ndev->hw_features |= aq_hw_caps->hw_features;
 259         self->ndev->features = aq_hw_caps->hw_features;
 260         self->ndev->vlan_features |= NETIF_F_HW_CSUM | NETIF_F_RXCSUM |
 261                                      NETIF_F_RXHASH | NETIF_F_SG | NETIF_F_LRO;
 262         self->ndev->priv_flags = aq_hw_caps->hw_priv_flags;
 263         self->ndev->priv_flags |= IFF_LIVE_ADDR_CHANGE;
 264
 265         self->ndev->mtu = aq_nic_cfg->mtu - ETH_HLEN;
 266         self->ndev->max_mtu = aq_hw_caps->mtu - ETH_FCS_LEN - ETH_HLEN;
 267
 268 }
 269
 270 void aq_nic_set_tx_ring(struct aq_nic_s *self, unsigned int idx,
 271                         struct aq_ring_s *ring)
 272 {
 273         self->aq_ring_tx[idx] = ring;
 274 }
 275
 276 struct net_device *aq_nic_get_ndev(struct aq_nic_s *self)
 277 {
 278         return self->ndev;
 279 }
 280
 281 int aq_nic_init(struct aq_nic_s *self)
 282 {
 283         struct aq_vec_s *aq_vec = NULL;
 284         int err = 0;
 285         unsigned int i = 0U;
 286
 287         self->power_state = AQ_HW_POWER_STATE_D0;
 288         err = self->aq_hw_ops->hw_reset(self->aq_hw);
 289         if (err < 0)
 290                 goto err_exit;
 291
 292         err = self->aq_hw_ops->hw_init(self->aq_hw,
 293                                        aq_nic_get_ndev(self)->dev_addr);
 294         if (err < 0)
 295                 goto err_exit;
 296
 297         for (i = 0U, aq_vec = self->aq_vec[0];
 298                 self->aq_vecs > i; ++i, aq_vec = self->aq_vec[i])
 299                 aq_vec_init(aq_vec, self->aq_hw_ops, self->aq_hw);
 300
 301         netif_carrier_off(self->ndev);
 302
 303 err_exit:
 304         return err;
 305 }
 306
 307 int aq_nic_start(struct aq_nic_s *self)
 308 {
 309         struct aq_vec_s *aq_vec = NULL;
 310         int err = 0;
 311         unsigned int i = 0U;
 312
 313         err = self->aq_hw_ops->hw_multicast_list_set(self->aq_hw,
 314                                                      self->mc_list.ar,
 315                                                      self->mc_list.count);
 316         if (err < 0)
 317                 goto err_exit;
 318
 319         err = self->aq_hw_ops->hw_packet_filter_set(self->aq_hw,
 320                                                     self->packet_filter);
 321         if (err < 0)
 322                 goto err_exit;
 323
 324         for (i = 0U, aq_vec = self->aq_vec[0];
 325                 self->aq_vecs > i; ++i, aq_vec = self->aq_vec[i]) {
 326                 err = aq_vec_start(aq_vec);
 327                 if (err < 0)
 328                         goto err_exit;
 329         }
 330
 331         err = self->aq_hw_ops->hw_start(self->aq_hw);
 332         if (err < 0)
 333                 goto err_exit;
 334
 335         err = aq_nic_update_interrupt_moderation_settings(self);
 336         if (err)
 337                 goto err_exit;
 338         timer_setup(&self->service_timer, aq_nic_service_timer_cb, 0);
 339         mod_timer(&self->service_timer, jiffies +
 340                   AQ_CFG_SERVICE_TIMER_INTERVAL);
 341
 342         if (self->aq_nic_cfg.is_polling) {
 343                 timer_setup(&self->polling_timer, aq_nic_polling_timer_cb, 0);
 344                 mod_timer(&self->polling_timer, jiffies +
 345                           AQ_CFG_POLLING_TIMER_INTERVAL);
 346         } else {
 347                 for (i = 0U, aq_vec = self->aq_vec[0];
 348                         self->aq_vecs > i; ++i, aq_vec = self->aq_vec[i]) {
 349                         err = aq_pci_func_alloc_irq(self, i,
 350                                                     self->ndev->name, aq_vec,
 351                                                     aq_vec_get_affinity_mask(aq_vec));
 352                         if (err < 0)
 353                                 goto err_exit;
 354                 }
 355
 356                 err = self->aq_hw_ops->hw_irq_enable(self->aq_hw,
 357                                                      AQ_CFG_IRQ_MASK);
 358                 if (err < 0)
 359                         goto err_exit;
 360         }
 361
 362         err = netif_set_real_num_tx_queues(self->ndev, self->aq_vecs);
 363         if (err < 0)
 364                 goto err_exit;
 365
 366         err = netif_set_real_num_rx_queues(self->ndev, self->aq_vecs);
 367         if (err < 0)
 368                 goto err_exit;
 369
 370         netif_tx_start_all_queues(self->ndev);
 371
 372 err_exit:
 373         return err;
 374 }
 375
 376 static unsigned int aq_nic_map_skb(struct aq_nic_s *self,
 377                                    struct sk_buff *skb,
 378                                    struct aq_ring_s *ring)
 379 {
 380         unsigned int ret = 0U;
 381         unsigned int nr_frags = skb_shinfo(skb)->nr_frags;
 382         unsigned int frag_count = 0U;
 383         unsigned int dx = ring->sw_tail;
 384         struct aq_ring_buff_s *first = NULL;
 385         struct aq_ring_buff_s *dx_buff = &ring->buff_ring[dx];
 386
 387         if (unlikely(skb_is_gso(skb))) {
 388                 dx_buff->flags = 0U;
 389                 dx_buff->len_pkt = skb->len;
 390                 dx_buff->len_l2 = ETH_HLEN;
 391                 dx_buff->len_l3 = ip_hdrlen(skb);
 392                 dx_buff->len_l4 = tcp_hdrlen(skb);
 393                 dx_buff->mss = skb_shinfo(skb)->gso_size;
 394                 dx_buff->is_txc = 1U;
 395                 dx_buff->eop_index = 0xffffU;
 396
 397                 dx_buff->is_ipv6 =
 398                         (ip_hdr(skb)->version == 6) ? 1U : 0U;
 399
 400                 dx = aq_ring_next_dx(ring, dx);
 401                 dx_buff = &ring->buff_ring[dx];
 402                 ++ret;
 403         }
 404
 405         dx_buff->flags = 0U;
 406         dx_buff->len = skb_headlen(skb);
 407         dx_buff->pa = dma_map_single(aq_nic_get_dev(self),
 408                                      skb->data,
 409                                      dx_buff->len,
 410                                      DMA_TO_DEVICE);
 411
 412         if (unlikely(dma_mapping_error(aq_nic_get_dev(self), dx_buff->pa)))
 413                 goto exit;
 414
 415         first = dx_buff;
 416         dx_buff->len_pkt = skb->len;
 417         dx_buff->is_sop = 1U;
 418         dx_buff->is_mapped = 1U;
 419         ++ret;
 420
 421         if (skb->ip_summed == CHECKSUM_PARTIAL) {
 422                 dx_buff->is_ip_cso = (htons(ETH_P_IP) == skb->protocol) ?
 423                         1U : 0U;
 424
 425                 if (ip_hdr(skb)->version == 4) {
 426                         dx_buff->is_tcp_cso =
 427                                 (ip_hdr(skb)->protocol == IPPROTO_TCP) ?
 428                                         1U : 0U;
 429                         dx_buff->is_udp_cso =
 430                                 (ip_hdr(skb)->protocol == IPPROTO_UDP) ?
 431                                         1U : 0U;
 432                 } else if (ip_hdr(skb)->version == 6) {
 433                         dx_buff->is_tcp_cso =
 434                                 (ipv6_hdr(skb)->nexthdr == NEXTHDR_TCP) ?
 435                                         1U : 0U;
 436                         dx_buff->is_udp_cso =
 437                                 (ipv6_hdr(skb)->nexthdr == NEXTHDR_UDP) ?
 438                                         1U : 0U;
 439                 }
 440         }
 441
 442         for (; nr_frags--; ++frag_count) {
 443                 unsigned int frag_len = 0U;
 444                 unsigned int buff_offset = 0U;
 445                 unsigned int buff_size = 0U;
 446                 dma_addr_t frag_pa;
 447                 skb_frag_t *frag = &skb_shinfo(skb)->frags[frag_count];
 448
 449                 frag_len = skb_frag_size(frag);
 450
 451                 while (frag_len) {
 452                         if (frag_len > AQ_CFG_TX_FRAME_MAX)
 453                                 buff_size = AQ_CFG_TX_FRAME_MAX;
 454                         else
 455                                 buff_size = frag_len;
 456
 457                         frag_pa = skb_frag_dma_map(aq_nic_get_dev(self),
 458                                                    frag,
 459                                                    buff_offset,
 460                                                    buff_size,
 461                                                    DMA_TO_DEVICE);
 462
 463                         if (unlikely(dma_mapping_error(aq_nic_get_dev(self),
 464                                                        frag_pa)))
 465                                 goto mapping_error;
 466
 467                         dx = aq_ring_next_dx(ring, dx);
 468                         dx_buff = &ring->buff_ring[dx];
 469
 470                         dx_buff->flags = 0U;
 471                         dx_buff->len = buff_size;
 472                         dx_buff->pa = frag_pa;
 473                         dx_buff->is_mapped = 1U;
 474                         dx_buff->eop_index = 0xffffU;
 475
 476                         frag_len -= buff_size;
 477                         buff_offset += buff_size;
 478
 479                         ++ret;
 480                 }
 481         }
 482
 483         first->eop_index = dx;
 484         dx_buff->is_eop = 1U;
 485         dx_buff->skb = skb;
 486         goto exit;
 487
 488 mapping_error:
 489         for (dx = ring->sw_tail;
 490              ret > 0;
 491              --ret, dx = aq_ring_next_dx(ring, dx)) {
 492                 dx_buff = &ring->buff_ring[dx];
 493
 494                 if (!dx_buff->is_txc && dx_buff->pa) {
 495                         if (unlikely(dx_buff->is_sop)) {
 496                                 dma_unmap_single(aq_nic_get_dev(self),
 497                                                  dx_buff->pa,
 498                                                  dx_buff->len,
 499                                                  DMA_TO_DEVICE);
 500                         } else {
 501                                 dma_unmap_page(aq_nic_get_dev(self),
 502                                                dx_buff->pa,
 503                                                dx_buff->len,
 504                                                DMA_TO_DEVICE);
 505                         }
 506                 }
 507         }
 508
 509 exit:
 510         return ret;
 511 }
 512
 513 int aq_nic_xmit(struct aq_nic_s *self, struct sk_buff *skb)
 514 {
 515         struct aq_ring_s *ring = NULL;
 516         unsigned int frags = 0U;
 517         unsigned int vec = skb->queue_mapping % self->aq_nic_cfg.vecs;
 518         unsigned int tc = 0U;
 519         int err = NETDEV_TX_OK;
 520
 521         frags = skb_shinfo(skb)->nr_frags + 1;
 522
 523         ring = self->aq_ring_tx[AQ_NIC_TCVEC2RING(self, tc, vec)];
 524
 525         if (frags > AQ_CFG_SKB_FRAGS_MAX) {
 526                 dev_kfree_skb_any(skb);
 527                 goto err_exit;
 528         }
 529
 530         aq_ring_update_queue_state(ring);
 531
 532         /* Above status update may stop the queue. Check this. */
 533         if (__netif_subqueue_stopped(self->ndev, ring->idx)) {
 534                 err = NETDEV_TX_BUSY;
 535                 goto err_exit;
 536         }
 537
 538         frags = aq_nic_map_skb(self, skb, ring);
 539
 540         if (likely(frags)) {
 541                 err = self->aq_hw_ops->hw_ring_tx_xmit(self->aq_hw,
 542                                                        ring, frags);
 543                 if (err >= 0) {
 544                         ++ring->stats.tx.packets;
 545                         ring->stats.tx.bytes += skb->len;
 546                 }
 547         } else {
 548                 err = NETDEV_TX_BUSY;
 549         }
 550
 551 err_exit:
 552         return err;
 553 }
 554
 555 int aq_nic_update_interrupt_moderation_settings(struct aq_nic_s *self)
 556 {
 557         return self->aq_hw_ops->hw_interrupt_moderation_set(self->aq_hw);
 558 }
 559
 560 int aq_nic_set_packet_filter(struct aq_nic_s *self, unsigned int flags)
 561 {
 562         int err = 0;
 563
 564         err = self->aq_hw_ops->hw_packet_filter_set(self->aq_hw, flags);
 565         if (err < 0)
 566                 goto err_exit;
 567
 568         self->packet_filter = flags;
 569
 570 err_exit:
 571         return err;
 572 }
 573
 574 int aq_nic_set_multicast_list(struct aq_nic_s *self, struct net_device *ndev)
 575 {
 576         unsigned int packet_filter = self->packet_filter;
 577         struct netdev_hw_addr *ha = NULL;
 578         unsigned int i = 0U;
 579
 580         self->mc_list.count = 0;
 581         if (netdev_uc_count(ndev) > AQ_HW_MULTICAST_ADDRESS_MAX) {
 582                 packet_filter |= IFF_PROMISC;
 583         } else {
 584                 netdev_for_each_uc_addr(ha, ndev) {
 585                         ether_addr_copy(self->mc_list.ar[i++], ha->addr);
 586
 587                         if (i >= AQ_HW_MULTICAST_ADDRESS_MAX)
 588                                 break;
 589                 }
 590         }
 591
 592         if (i + netdev_mc_count(ndev) > AQ_HW_MULTICAST_ADDRESS_MAX) {
 593                 packet_filter |= IFF_ALLMULTI;
 594         } else {
 595                 netdev_for_each_mc_addr(ha, ndev) {
 596                         ether_addr_copy(self->mc_list.ar[i++], ha->addr);
 597
 598                         if (i >= AQ_HW_MULTICAST_ADDRESS_MAX)
 599                                 break;
 600                 }
 601         }
 602
 603         if (i > 0 && i <= AQ_HW_MULTICAST_ADDRESS_MAX) {
 604                 packet_filter |= IFF_MULTICAST;
 605                 self->mc_list.count = i;
 606                 self->aq_hw_ops->hw_multicast_list_set(self->aq_hw,
 607                                                        self->mc_list.ar,
 608                                                        self->mc_list.count);
 609         }
 610         return aq_nic_set_packet_filter(self, packet_filter);
 611 }
 612
 613 int aq_nic_set_mtu(struct aq_nic_s *self, int new_mtu)
 614 {
 615         self->aq_nic_cfg.mtu = new_mtu;
 616
 617         return 0;
 618 }
 619
 620 int aq_nic_set_mac(struct aq_nic_s *self, struct net_device *ndev)
 621 {
 622         return self->aq_hw_ops->hw_set_mac_address(self->aq_hw, ndev->dev_addr);
 623 }
 624
 625 unsigned int aq_nic_get_link_speed(struct aq_nic_s *self)
 626 {
 627         return self->link_status.mbps;
 628 }
 629
 630 int aq_nic_get_regs(struct aq_nic_s *self, struct ethtool_regs *regs, void *p)
 631 {
 632         u32 *regs_buff = p;
 633         int err = 0;
 634
 635         regs->version = 1;
 636
 637         err = self->aq_hw_ops->hw_get_regs(self->aq_hw,
 638                                            self->aq_nic_cfg.aq_hw_caps,
 639                                            regs_buff);
 640         if (err < 0)
 641                 goto err_exit;
 642
 643 err_exit:
 644         return err;
 645 }
 646
 647 int aq_nic_get_regs_count(struct aq_nic_s *self)
 648 {
 649         return self->aq_nic_cfg.aq_hw_caps->mac_regs_count;
 650 }
 651
 652 void aq_nic_get_stats(struct aq_nic_s *self, u64 *data)
 653 {
 654         unsigned int i = 0U;
 655         unsigned int count = 0U;
 656         struct aq_vec_s *aq_vec = NULL;
 657         struct aq_stats_s *stats = self->aq_hw_ops->hw_get_hw_stats(self->aq_hw);
 658
 659         if (!stats)
 660                 goto err_exit;
 661
 662         data[i] = stats->uprc + stats->mprc + stats->bprc;
 663         data[++i] = stats->uprc;
 664         data[++i] = stats->mprc;
 665         data[++i] = stats->bprc;
 666         data[++i] = stats->erpt;
 667         data[++i] = stats->uptc + stats->mptc + stats->bptc;
 668         data[++i] = stats->uptc;
 669         data[++i] = stats->mptc;
 670         data[++i] = stats->bptc;
 671         data[++i] = stats->ubrc;
 672         data[++i] = stats->ubtc;
 673         data[++i] = stats->mbrc;
 674         data[++i] = stats->mbtc;
 675         data[++i] = stats->bbrc;
 676         data[++i] = stats->bbtc;
 677         data[++i] = stats->ubrc + stats->mbrc + stats->bbrc;
 678         data[++i] = stats->ubtc + stats->mbtc + stats->bbtc;
 679         data[++i] = stats->dma_pkt_rc;
 680         data[++i] = stats->dma_pkt_tc;
 681         data[++i] = stats->dma_oct_rc;
 682         data[++i] = stats->dma_oct_tc;
 683         data[++i] = stats->dpc;
 684
 685         i++;
 686
 687         data += i;
 688
 689         for (i = 0U, aq_vec = self->aq_vec[0];
 690                 aq_vec && self->aq_vecs > i; ++i, aq_vec = self->aq_vec[i]) {
 691                 data += count;
 692                 aq_vec_get_sw_stats(aq_vec, data, &count);
 693         }
 694
 695 err_exit:;
 696 }
 697
 698 static void aq_nic_update_ndev_stats(struct aq_nic_s *self)
 699 {
 700         struct net_device *ndev = self->ndev;
 701         struct aq_stats_s *stats = self->aq_hw_ops->hw_get_hw_stats(self->aq_hw);
 702
 703         ndev->stats.rx_packets = stats->uprc + stats->mprc + stats->bprc;
 704         ndev->stats.rx_bytes = stats->ubrc + stats->mbrc + stats->bbrc;
 705         ndev->stats.rx_errors = stats->erpr;
 706         ndev->stats.tx_packets = stats->uptc + stats->mptc + stats->bptc;
 707         ndev->stats.tx_bytes = stats->ubtc + stats->mbtc + stats->bbtc;
 708         ndev->stats.tx_errors = stats->erpt;
 709         ndev->stats.multicast = stats->mprc;
 710 }
 711
 712 void aq_nic_get_link_ksettings(struct aq_nic_s *self,
 713                                struct ethtool_link_ksettings *cmd)
 714 {
 715         if (self->aq_nic_cfg.aq_hw_caps->media_type == AQ_HW_MEDIA_TYPE_FIBRE)
 716                 cmd->base.port = PORT_FIBRE;
 717         else
 718                 cmd->base.port = PORT_TP;
 719         /* This driver supports only 10G capable adapters, so DUPLEX_FULL */
 720         cmd->base.duplex = DUPLEX_FULL;
 721         cmd->base.autoneg = self->aq_nic_cfg.is_autoneg;
 722
 723         ethtool_link_ksettings_zero_link_mode(cmd, supported);
 724
 725         if (self->aq_nic_cfg.aq_hw_caps->link_speed_msk & AQ_NIC_RATE_10G)
 726                 ethtool_link_ksettings_add_link_mode(cmd, supported,
 727                                                      10000baseT_Full);
 728
 729         if (self->aq_nic_cfg.aq_hw_caps->link_speed_msk & AQ_NIC_RATE_5G)
 730                 ethtool_link_ksettings_add_link_mode(cmd, supported,
 731                                                      5000baseT_Full);
 732
 733         if (self->aq_nic_cfg.aq_hw_caps->link_speed_msk & AQ_NIC_RATE_2GS)
 734                 ethtool_link_ksettings_add_link_mode(cmd, supported,
 735                                                      2500baseT_Full);
 736
 737         if (self->aq_nic_cfg.aq_hw_caps->link_speed_msk & AQ_NIC_RATE_1G)
 738                 ethtool_link_ksettings_add_link_mode(cmd, supported,
 739                                                      1000baseT_Full);
 740
 741         if (self->aq_nic_cfg.aq_hw_caps->link_speed_msk & AQ_NIC_RATE_100M)
 742                 ethtool_link_ksettings_add_link_mode(cmd, supported,
 743                                                      100baseT_Full);
 744
 745         if (self->aq_nic_cfg.aq_hw_caps->flow_control)
 746                 ethtool_link_ksettings_add_link_mode(cmd, supported,
 747                                                      Pause);
 748
 749         ethtool_link_ksettings_add_link_mode(cmd, supported, Autoneg);
 750
 751         if (self->aq_nic_cfg.aq_hw_caps->media_type == AQ_HW_MEDIA_TYPE_FIBRE)
 752                 ethtool_link_ksettings_add_link_mode(cmd, supported, FIBRE);
 753         else
 754                 ethtool_link_ksettings_add_link_mode(cmd, supported, TP);
 755
 756         ethtool_link_ksettings_zero_link_mode(cmd, advertising);
 757
 758         if (self->aq_nic_cfg.is_autoneg)
 759                 ethtool_link_ksettings_add_link_mode(cmd, advertising, Autoneg);
 760
 761         if (self->aq_nic_cfg.link_speed_msk  & AQ_NIC_RATE_10G)
 762                 ethtool_link_ksettings_add_link_mode(cmd, advertising,
 763                                                      10000baseT_Full);
 764
 765         if (self->aq_nic_cfg.link_speed_msk  & AQ_NIC_RATE_5G)
 766                 ethtool_link_ksettings_add_link_mode(cmd, advertising,
 767                                                      5000baseT_Full);
 768
 769         if (self->aq_nic_cfg.link_speed_msk  & AQ_NIC_RATE_2GS)
 770                 ethtool_link_ksettings_add_link_mode(cmd, advertising,
 771                                                      2500baseT_Full);
 772
 773         if (self->aq_nic_cfg.link_speed_msk  & AQ_NIC_RATE_1G)
 774                 ethtool_link_ksettings_add_link_mode(cmd, advertising,
 775                                                      1000baseT_Full);
 776
 777         if (self->aq_nic_cfg.link_speed_msk  & AQ_NIC_RATE_100M)
 778                 ethtool_link_ksettings_add_link_mode(cmd, advertising,
 779                                                      100baseT_Full);
 780
 781         if (self->aq_nic_cfg.flow_control & AQ_NIC_FC_RX)
 782                 ethtool_link_ksettings_add_link_mode(cmd, advertising,
 783                                                      Pause);
 784
 785         /* Asym is when either RX or TX, but not both */
 786         if (!!(self->aq_nic_cfg.flow_control & AQ_NIC_FC_TX) ^
 787             !!(self->aq_nic_cfg.flow_control & AQ_NIC_FC_RX))
 788                 ethtool_link_ksettings_add_link_mode(cmd, advertising,
 789                                                      Asym_Pause);
 790
 791         if (self->aq_nic_cfg.aq_hw_caps->media_type == AQ_HW_MEDIA_TYPE_FIBRE)
 792                 ethtool_link_ksettings_add_link_mode(cmd, advertising, FIBRE);
 793         else
 794                 ethtool_link_ksettings_add_link_mode(cmd, advertising, TP);
 795 }
 796
 797 int aq_nic_set_link_ksettings(struct aq_nic_s *self,
 798                               const struct ethtool_link_ksettings *cmd)
 799 {
 800         u32 speed = 0U;
 801         u32 rate = 0U;
 802         int err = 0;
 803
 804         if (cmd->base.autoneg == AUTONEG_ENABLE) {
 805                 rate = self->aq_nic_cfg.aq_hw_caps->link_speed_msk;
 806                 self->aq_nic_cfg.is_autoneg = true;
 807         } else {
 808                 speed = cmd->base.speed;
 809
 810                 switch (speed) {
 811                 case SPEED_100:
 812                         rate = AQ_NIC_RATE_100M;
 813                         break;
 814
 815                 case SPEED_1000:
 816                         rate = AQ_NIC_RATE_1G;
 817                         break;
 818
 819                 case SPEED_2500:
 820                         rate = AQ_NIC_RATE_2GS;
 821                         break;
 822
 823                 case SPEED_5000:
 824                         rate = AQ_NIC_RATE_5G;
 825                         break;
 826
 827                 case SPEED_10000:
 828                         rate = AQ_NIC_RATE_10G;
 829                         break;
 830
 831                 default:
 832                         err = -1;
 833                         goto err_exit;
 834                 break;
 835                 }
 836                 if (!(self->aq_nic_cfg.aq_hw_caps->link_speed_msk & rate)) {
 837                         err = -1;
 838                         goto err_exit;
 839                 }
 840
 841                 self->aq_nic_cfg.is_autoneg = false;
 842         }
 843
 844         err = self->aq_fw_ops->set_link_speed(self->aq_hw, rate);
 845         if (err < 0)
 846                 goto err_exit;
 847
 848         self->aq_nic_cfg.link_speed_msk = rate;
 849
 850 err_exit:
 851         return err;
 852 }
 853
 854 struct aq_nic_cfg_s *aq_nic_get_cfg(struct aq_nic_s *self)
 855 {
 856         return &self->aq_nic_cfg;
 857 }
 858
 859 u32 aq_nic_get_fw_version(struct aq_nic_s *self)
 860 {
 861         u32 fw_version = 0U;
 862
 863         self->aq_hw_ops->hw_get_fw_version(self->aq_hw, &fw_version);
 864
 865         return fw_version;
 866 }
 867
 868 int aq_nic_stop(struct aq_nic_s *self)
 869 {
 870         struct aq_vec_s *aq_vec = NULL;
 871         unsigned int i = 0U;
 872
 873         netif_tx_disable(self->ndev);
 874         netif_carrier_off(self->ndev);
 875
 876         del_timer_sync(&self->service_timer);
 877
 878         self->aq_hw_ops->hw_irq_disable(self->aq_hw, AQ_CFG_IRQ_MASK);
 879
 880         if (self->aq_nic_cfg.is_polling)
 881                 del_timer_sync(&self->polling_timer);
 882         else
 883                 aq_pci_func_free_irqs(self);
 884
 885         for (i = 0U, aq_vec = self->aq_vec[0];
 886                 self->aq_vecs > i; ++i, aq_vec = self->aq_vec[i])
 887                 aq_vec_stop(aq_vec);
 888
 889         return self->aq_hw_ops->hw_stop(self->aq_hw);
 890 }
 891
 892 void aq_nic_deinit(struct aq_nic_s *self)
 893 {
 894         struct aq_vec_s *aq_vec = NULL;
 895         unsigned int i = 0U;
 896
 897         if (!self)
 898                 goto err_exit;
 899
 900         for (i = 0U, aq_vec = self->aq_vec[0];
 901                 self->aq_vecs > i; ++i, aq_vec = self->aq_vec[i])
 902                 aq_vec_deinit(aq_vec);
 903
 904         self->aq_fw_ops->deinit(self->aq_hw);
 905
 906         if (self->power_state != AQ_HW_POWER_STATE_D0 ||
 907             self->aq_hw->aq_nic_cfg->wol) {
 908                 self->aq_fw_ops->set_power(self->aq_hw,
 909                                            self->power_state,
 910                                            self->ndev->dev_addr);
 911         }
 912
 913 err_exit:;
 914 }
 915
 916 void aq_nic_free_vectors(struct aq_nic_s *self)
 917 {
 918         unsigned int i = 0U;
 919
 920         if (!self)
 921                 goto err_exit;
 922
 923         for (i = ARRAY_SIZE(self->aq_vec); i--;) {
 924                 if (self->aq_vec[i]) {
 925                         aq_vec_free(self->aq_vec[i]);
 926                         self->aq_vec[i] = NULL;
 927                 }
 928         }
 929
 930 err_exit:;
 931 }
 932
 933 int aq_nic_change_pm_state(struct aq_nic_s *self, pm_message_t *pm_msg)
 934 {
 935         int err = 0;
 936
 937         if (!netif_running(self->ndev)) {
 938                 err = 0;
 939                 goto out;
 940         }
 941         rtnl_lock();
 942         if (pm_msg->event & PM_EVENT_SLEEP || pm_msg->event & PM_EVENT_FREEZE) {
 943                 self->power_state = AQ_HW_POWER_STATE_D3;
 944                 netif_device_detach(self->ndev);
 945                 netif_tx_stop_all_queues(self->ndev);
 946
 947                 err = aq_nic_stop(self);
 948                 if (err < 0)
 949                         goto err_exit;
 950
 951                 aq_nic_deinit(self);
 952         } else {
 953                 err = aq_nic_init(self);
 954                 if (err < 0)
 955                         goto err_exit;
 956
 957                 err = aq_nic_start(self);
 958                 if (err < 0)
 959                         goto err_exit;
 960
 961                 netif_device_attach(self->ndev);
 962                 netif_tx_start_all_queues(self->ndev);
 963         }
 964
 965 err_exit:
 966         rtnl_unlock();
 967 out:
 968         return err;
 969 }
 970
 971 void aq_nic_shutdown(struct aq_nic_s *self)
 972 {
 973         int err = 0;
 974
 975         if (!self->ndev)
 976                 return;
 977
 978         rtnl_lock();
 979
 980         netif_device_detach(self->ndev);
 981
 982         if (netif_running(self->ndev)) {
 983                 err = aq_nic_stop(self);
 984                 if (err < 0)
 985                         goto err_exit;
 986         }
 987         aq_nic_deinit(self);
 988
 989 err_exit:
 990         rtnl_unlock();
 991 }